Patents by Inventor Kumar Yalamanchili
Kumar Yalamanchili has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12325906Abstract: A method for producing coated substrates involving deposition of at least one coating layer on a surface of the substrate. The coating layer is synthesized in the interior of a vacuum coating chamber by using reactive PVD cathodic evaporation techniques. Nitrogen gas is introduced in the vacuum coating chamber to be used as reactive gas, and at least one arc evaporation source comprising a target material operated as cathode for evaporating the target material is used. The method involves a reactive deposition of aluminium titanium nitride as a result of a reaction between aluminium and titan from the target material with nitrogen from the nitrogen gas comprised in the coating chamber.Type: GrantFiled: September 29, 2021Date of Patent: June 10, 2025Assignee: OERLIKON SURFACE SOLUTIONS AG, PFÄFFIKONInventors: Siegfried Krassnitzer, Marijana Mionic Ebersold, Siva Phani Kumar Yalamanchili
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Patent number: 12098457Abstract: Coated substrate comprising a surface coated with a coating comprising at least one coating layer of (TM1?xAlx)OyNz with (0.75?y)?z?(1.2?y) and 0.6>y>0, exhibiting a solid solution with B1 cubic structure, wherein x is the content of aluminum in atomic fraction if only aluminum and TM are being considered for the determination of the element composition in atomic percentage, and y is the content of oxygen in atomic fraction if only 0 and N are being considered for the determination of the element composition in atomic percentage, wherein TM is one or more transition metals and 0.05<x<0.95, wherein y correspond to a value of oxygen concentration in the TM1?xAlxOyNz coating layer that produces an increment of the thermal stability in such a manner that no precipitation of w-AlN phase is produced when the coated substrate or at least the coated surface of the coated substrate is exposed to temperatures higher than 1100° C.Type: GrantFiled: March 9, 2020Date of Patent: September 24, 2024Assignee: Oerlikon Surface Solutions AG, PfäffikonInventors: Anders Olof Eriksson, Siva Phani Kumar Yalamanchili, Mirjam Arndt, Damian Mauritius Holzapfel, Jochen Michael Schneider
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Publication number: 20240227041Abstract: A coated tool of the present invention includes a base material; and a hard coating film on the base material. The hard coating film is a nitride or carbonitride which contains aluminum (Al) of 65 atomic % or more and 90 atomic % or less and titanium (Ti) of 10 atomic % or more and 35 atomic % or less with respect to a total amount of metal (including metalloid) elements, and have a face-centered cubic structure. In the X-ray intensity distribution of the ? axis of the positive pole figure with respect to the (111) plane of the face-centered cubic structure, the hard coating film have a maximum intensity Ia in the ? angle range of 80° to 90° and an intensity in the ? angle range of 0° to 70° is 30% or less of the Ia.Type: ApplicationFiled: February 9, 2022Publication date: July 11, 2024Applicants: MOLDINO TOOL ENGINEERING, LTD., Oerlikon Surface Solutions AG, PfaffikonInventors: Tomoya Sasaki, Kazuyuki Kubota, Kumar Yalamanchili, Denis Kurapov, Wolfgang Kalss
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Patent number: 12006564Abstract: The present invention discloses a non-reactive PVD coating process for producing an aluminium-rich AlxTi1?xN-based thin film having an aluminium content of >75 at-% based on the total amount of aluminium and titanium in the thin film, a cubic crystal structure, and a columnar microstructure, wherein ceramic targets are used as a material source for the aluminium-rich AlxTi1?xN-based thin film.Type: GrantFiled: November 11, 2019Date of Patent: June 11, 2024Assignees: Oerlikon Surface Solutions AG, Pfäffikon, MOLDINO Tool Engineering, Ltd.Inventors: Siva Phani Kumar Yalamanchili, Denis Kurapov, Tomoya Sasaki, Kazuyuki Kubota
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Publication number: 20240170738Abstract: A battery half-cell comprising a copper foil, a lithium anode layer deposited on a surface of the copper foil and a capping layer, preferably a conformal capping layer, deposited on the lithium anode layer. The lithium anode layer comprises vertical structures such as columnar structures and/or grid structures.Type: ApplicationFiled: March 24, 2022Publication date: May 23, 2024Inventor: Siva Phani Kumar YALAMANCHILI
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Patent number: 11965234Abstract: This invention relates to a coating comprising at least one AlTiN-based film deposited by means of a PVD process, wherein the at least one AlTiN-based film deposited is comprising an Al-content—in relation to the Ti-content—in atomic percentage higher than 75%, and wherein the AlTiN-based film exhibits solely a crystallographic cubic phase and internal compressive stresses and this invention relates to a method involving deposition of an AlTiN-based film.Type: GrantFiled: September 5, 2018Date of Patent: April 23, 2024Assignee: Oerlikon Surface Solutions AG, PfäffikonInventors: Denis Kurapov, Siva Phani Kumar Yalamanchili, Anders Olof Eriksson
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Publication number: 20240043985Abstract: This invention relates to a coating comprising at least one AlTiN-based film deposited by means of a PVD process, wherein the at least one AlTiN-based film deposited is comprising an Al-content—in relation to the Ti-content—in atomic percentage higher than 75%, and wherein the AlTiN-based film exhibits solely a crystallographic cubic phase and internal compressive stresses and this invention relates to a method involving deposition of an AlTiN-based film.Type: ApplicationFiled: September 28, 2023Publication date: February 8, 2024Inventors: Denis KURAPOV, Siva Phani Kumar YALAMANCHILI, Anders Olof ERIKSSON
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Publication number: 20240018642Abstract: A PVD coating process, preferably an arc evaporation PVD coating process for producing an aluminum-rich AlxTi1-xN-based thin film having an aluminium content of >70 at-% based on the total amount of aluminium and titanium in the thin film, a cubic crystal structure and an at least partially non-columnar microstructure with a non-columnar content of >1 vol-% based on the volume of the total microstructure, wherein ceramic targets are used as material source for the aluminium-rich AlxTi1-xN-based thin film.Type: ApplicationFiled: December 16, 2021Publication date: January 18, 2024Inventor: Siva Phani Kumar YALAMANCHILI
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Publication number: 20230399733Abstract: A coating layer and a method for producing thereof, wherein the coating layer includes Al, Ti and N as main components according to formula (AlaTib)xNy, where a and b are respectively the concentration of aluminium and titanium in atomic ratio considering only Al and Ti for the calculation of the element composition in the layer, whereby a+b=1 and 0?a?0.7 and 0?b?0.2, and where x is the sum of the concentration of Al and the concentration of Ti, and y is the concentration of nitrogen in atomic ratio considering only Al, Ti and N for the calculation of the element composition in the layer, whereby x+y=1 and 0.45?x?0.55, and wherein the coating layer exhibits 90% or more of fcc cubic phase, and compressive stress of 2.5 GPa or more, preferably between 2.5 GPa and 6 GPa.Type: ApplicationFiled: September 29, 2021Publication date: December 14, 2023Inventors: Siegfried KRASSNITZER, Marijana Mionic EBERSOLD, Siva Phani Kumar YALAMANCHILI
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Patent number: 11821073Abstract: The present invention discloses a high-temperature stable ceramic coating structure including a microalloy comprising the elements Al, V and N producible by a gas phase deposition process.Type: GrantFiled: October 28, 2019Date of Patent: November 21, 2023Assignee: Oerlikon Surface Solutions AG, PfäffikonInventor: Siva Phani Kumar Yalamanchili
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Publication number: 20230275263Abstract: The invention relates to a method for manufacturing a solid-state battery (2) comprising the steps of preparing (100) a cathode (4), preparing (400) an anode (6), and preparing (200) a solid-state electrolyte (8) to be disposed between the cathode (4) and the anode (6), wherein the solid-state electrolyte (8) is prepared by means of a coating process, wherein the coating process comprises PVD coating.Type: ApplicationFiled: July 2, 2021Publication date: August 31, 2023Inventor: Siva Phani Kumar Yalamanchili
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Patent number: 11649541Abstract: The present invention discloses a PVD coating process for producing a multifunctional coating structure comprising the steps of producing a HEA ceramic matrix on a substrate and the targeted introduction of a controlled precipitate structure into the HEA ceramic matrix to generate a desired specific property of the coating structure.Type: GrantFiled: October 28, 2019Date of Patent: May 16, 2023Assignee: Oerlikon Surface Solutions AG, PfäffikonInventor: Siva Phani Kumar Yalamanchili
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Publication number: 20230097468Abstract: A coated tool of the present invention includes a base material and a hard coating film on the base material. The hard coating film is a nitride or carbonitride containing aluminum (Al) of 65 atomic % or more 90 atomic % or less, titanium (Ti) of 10 atomic % or more 35 atomic % or less, a total of aluminum (Al) and titanium (Ti) of 85 atomic % or more, and argon (Ar) of 0.20 atomic % or less. The hard coating film satisfies a relationship of Ih×100/Is?12 when a peak intensity of a (010) plane of AlN of a hexagonal close-packed structure is Ih and a sum of peak intensities due to predetermined nine crystal planes of TiN and AlN is Is in an intensity profile obtained from a selected area diffraction pattern of a transmission electron microscope.Type: ApplicationFiled: February 19, 2021Publication date: March 30, 2023Applicants: MOLDINO Tool Engineering, Ltd., Oerlikon Surface Solutions AG, PfaffikonInventors: Tomoya Sasaki, Kazuyuki Kubota, Kumar Yalamanchili, Denis Kurapov, Wolfgang Kalss
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Publication number: 20220220601Abstract: Method for producing a coating comprising at least one PVD coating layer, wherein for the production of the at least one PVD coating layer materials from one or more targets are evaporated by using a PVD technique in a coating chamber comprising oxygen and nitrogen as reactive gases, wherein during deposition of the at least one PVD coating layer a multi-anion HEA-oxynitride structure is formed, which comprises a cation lattice formed of five or more elements and an anion lattice formed of two or more elements, wherein if only two elements are present in the anion lattice, they are oxygen and nitrogen.Type: ApplicationFiled: May 25, 2020Publication date: July 14, 2022Inventors: Siva Phani Kumar YALAMANCHILI, Helmut RUDIGIER, Doris FOPP-SPORI
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Publication number: 20220170146Abstract: Coated substrate comprising a surface coated with a coating comprising at least one coating layer of (TM1-xAlx)OyN, with (0.75-y)?z?(1.2-y) and 0.6>y>0, exhibiting a solid solution with B1 cubic structure, wherein x is the content of aluminum in atomic fraction if only aluminum and TM are being considered for the determination of the element composition in atomic percentage, and y is the content of oxygen in atomic fraction if only 0 and N are being considered for the determination of the element composition in atomic percentage, wherein TM is one or more transition metals and 0.05<x<0.95, wherein y correspond to a value of oxygen concentration in the TM1-xAlxOyNz coating layer that produces an increment of the thermal stability in such a manner that no precipitation w-AlN phase is produced when the coated substrate or at least the coated surface of the coated substrate is exposed to temperatures higher than 1100° C.Type: ApplicationFiled: March 9, 2020Publication date: June 2, 2022Inventors: Anders Olof ERIKSSON, Siva Phani Kumar YALAMANCHILI, Mirjam ARNDT, Damian Mauritius HOLZAPFEL, Jochen Michael SCHNEIDER
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Patent number: 11293089Abstract: The present invention relates to a component comprising a substrate coated with a coating having a film (3,4 or 3,4,5) comprising one or more transition metals, TM, aluminium, Al, and nitrogen, N, wherein the TM and N as well as Al and N are comprised in the film forming respectively nitride compounds, wherein the transition metal nitride, TM-N, is present in the film distributed in different portions exhibiting one crystalline phase of TM-N, and the aluminium nitride, Al—N, is present in the film in different portions exhibiting one phase of Al—N, whereas the phase of the transition metal nitride is cubic, c-TMN, the phase of the aluminium nitride is wurtzite, w-AIN, and wherein the film exhibits coherent or (semi-) coherent interfaces between the c-TMN phase portions and the w-AI-N phase portions.Type: GrantFiled: February 13, 2018Date of Patent: April 5, 2022Assignee: OERLIKON SURFACE SOLUTIONS AG, PFÄFFIKONInventors: Siva Phani Kumar Yalamanchili, Mirjam Arndt, Juergen Ramm, Siegfried Krassnitzer, Denis Kurapov
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Publication number: 20210395875Abstract: The present invention discloses a non-reactive PVD coating process for producing an aluminium-rich AlxTi1?xN-based thin film having an aluminium content of >75 at-% based on the total amount of aluminium and titanium in the thin film, a cubic crystal structure, and a columnar microstructure, wherein ceramic targets are used as a material source for the aluminium-rich AlxTi1?xN-based thin film.Type: ApplicationFiled: November 11, 2019Publication date: December 23, 2021Inventors: Siva Phani Kumar Yalamanchili, Denis Kurapov, Tomoya Sasaki, Kazuyuki Kubota
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Publication number: 20210388481Abstract: The present invention discloses a PVD coating process for producing a multifunctional coating structure comprising the steps of producing a HEA ceramic matrix on a substrate and the targeted introduction of a controlled precipitate structure into the HEA ceramic matrix to generate a desired specific property of the coating structure.Type: ApplicationFiled: October 28, 2019Publication date: December 16, 2021Inventor: Siva Phani Kumar Yalamanchili
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Publication number: 20210388482Abstract: The present invention discloses a high-temperature stable ceramic coating structure including a microalloy comprising the elements Al, V and N producible by a gas phase deposition process.Type: ApplicationFiled: October 28, 2019Publication date: December 16, 2021Inventor: Siva Phani Kumar Yalamanchili
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Publication number: 20210108306Abstract: This invention relates to a coating comprising at least one AlTiN-based film deposited by means of a PVD process, wherein the at least one AlTiN-based film deposited is comprising an Al-content—in relation to the Ti-content—in atomic percentage higher than 75%, and wherein the AlTiN-based film exhibits solely a crystallographic cubic phase and internal compressive stresses and this invention relates to a method involving deposition of an AlTiN-based film.Type: ApplicationFiled: September 5, 2018Publication date: April 15, 2021Inventors: Denis KURAPOV, Siva Phani Kumar YALAMANCHILI, Anders Olof ERIKSSON